.demo-layout-transparent 
{
  background: #0D47A1;
  background-position: cover;
}
.demo-layout-transparent .mdl-layout__header,
.demo-layout-transparent .mdl-layout__drawer-button {
  /* This background is dark, so we set text to white. Use 87% black instead if
     your background is light. */
  color: white;
}
